Stamping and printing paper webs.



0. KRI'I'GER."

STAMPING AND PRINTING PAPER WBBS. APPLICATION rum) 1120.18, 1909.

Patented Sept. 26, 1910.

- xszmmmw orro KRtTGER, or LE'IPZIG, GERMANY.

STAMPING AND PRINTING PAPER WEBS.

Specification of Letters Patent. Patented Sept. 20, 1910.

Application filed December 18, 1909. ,Serial No. 583,877.

To all whom it may concern:

Be 'it known that I. ()r'ro Kntinru, a subjectof the-German Emperor, residing at Leipzig, in Germany, have invented certain new and useful Improvements in or Relating to the Stamping and Printing of Paper Webs, of which the following is a specification.

This invention relates to a process of pre paring printing rollers for the purpose 'of printing paper webs, and more particularly for the purpose of printing wall papers.

'all papers have been introduced consisting of a paper ground with a lace or fabric fastened thereto, and such wall coverings are very expensive The object of this invention is to produce a paper in imitation of the wall papers or wall coverings above n'ientioned, and at a comparatively lowprice.

A further object; of the invention is to render said imitation absolutely accurate even to small details, such as flaws, knots etc. which might be found in the real fabric.

The invention consists in employing small fragments of genuine lace or other fabric for the purpose of producing the pattern from which the printing roller is made, and by using such fragments I am enabled to produce the pattern at a much lower cost than would otherwise be possible. In the accompanying drawings: Figure 1 is a sectional view illustrating the first step in my process. Fig. 2 is an end view of one of the printing cylinders. Fig. 3 is a face view of said cylinder. Y

My method of preparing printing rollers isas follows: A sheet of celluloid 1 or equivalent material, of a size corresponding to the circumferential area of the printing cylinder to be used is placed between heated polish-ed steel plates 2 and 3, until it becomes sufiiciently plastic, and Without blistering. The steel plate 3 is then removed and pieces of lace 4. or other fabric are carefully distributed uponthe plastic surface and the plate 3 replaced, and the whole subjected to pressure, as in a press 5. By this means an accurate impression of the lace is possi made in the celluloid, or other material even to the minutest detail. From the impression so produced galvano-plastic reproductions are made. The metallic impression thus formed, properly backed, forms a matrix to be employed as a printing plate. This impression 6 is bent into the form of a cylinder, being mounted upon a suitable drum 7, the edges of the plate 6 being carefully matched. In order'that the lace pattern may be continuous the edges are cemented together by means of a suitable soldering filling 8. and the fabric design is continued across the joint by engraving said solder. i

The cylinder constructed as above described may be employed as a printing cylinder for the pur use of producing a flat printed design, if esired, and if the pattern is a suitable one the pattern may be stamped by providing two cylinders, one with arelief pattern and the other with a corresponding intaglio pattern. The formation of such patterns is well known to those versed in the art.

It will be noted from the above that I can employ remnants of lace and other expensive fabrics and can therefore produce such a'tterns much cheaper than will be bIe if'it was necessary to employ a 80 fabric corres onding in size to the area of the roller, w ich area would be of considerable size, as the roller would have a length at least equal to the width of the rolls of wall paper to be printed.

What I claim is:

' 1. The process of making printing rollers for printing paper webs consisting in placing upon a plastic surface separate, lndependent portlons of the fabric to be imi- 90 tated, subjectin the same to pressure, preparing a meta ic reproduction from said pattern, rolling said reproduction into cylindrical form, soldering the meeting edges and engraving said solder filling, as and for the 95 purpose set forth.

2. The process of forming a printing roller for the printing of imitation fabric paper webs, consisting in placing independent fragments of a fabric upon a plastic sur- 1'00- face, and pressing the same into said surface, removing said fabric and permitting the plastic material to harden, preparing a flat metallic reproduction from said hardened surface, rolling the said reproduction into cylindrical form, uniting the edges by a suitable filling material, and continuing the fabric design across said filling.

OTTO KRUGER,

Witnesses: v

RUDOLPH FRIcKn, GEORGEHESSUN LIPUNBEE. 

